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W Y Kuu

Publications and source records attributed to W Y Kuu.

3 recordsLinked to original sources

Comparison of simulated and in-vivo plasma levels of cilastatin following intravenous in-line drug administration.

The primary objective of this work was to establish a method to simulate the plasma levels of cilastatin, a model drug, following an intravenous in-line delivery scheme. In-vivo data in dogs obtained from this work were used to demonstrate the validity of the proposed approach. The in-line drug delivery system consists of a drug containing device which is placed between a large volume parenteral and a patient. Numerous advantages have been identified for this automatic in-line reconstitution delivery system. The numerical convolution integral algorithm was used in this work to perform plasma profile simulation. The results indicated that the simulated cilastatin plasma profile following in-line delivery closely agreed with the in-vivo data.

Animals↗

Multiple-hole approach to zero-order release.

We describe an approach to zero-order drug delivery systems that utilizes a device consisting of multiple holes uniformly distributed in an impermeable membrane. The interior of the device is filled with a suspension of a drug in a polymeric matrix. Near zero-order release is attained by using the proper density and configuration of holes on the surface of the device.

Chemistry, Pharmaceutical↗

Prediction of water vapor transport rates across polyvinylchloride packaging systems using a novel radiotracer method.

A radiotracer method is used to study the transport properties of water vapor in polyvinylchloride (PVC), a plastic commonly used in the packaging of parenteral solutions. Water vapor transport across a PVC film appears to be Fickian in nature. Using the steady-state solution of Fick's second law and the permeability coefficient of water vapor across the PVC film obtained using the described method, the predicted water vapor transport rate (WVTR) for a parenteral solution packaged in PVC is in reasonable agreement with actual WVTR as determined by weight loss under precisely controlled conditions.

Deuterium↗